1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ca68fcfa94ed1a3a8162b1e058aaba3c469d58badd901ca631a5283276f1ff. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4962deee-1f00-405d-bd2f-4d165d2ff8b2.json and https://artists.proofprofile.net/proofs/artist/4962deee-1f00-405d-bd2f-4d165d2ff8b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9822c53e7c2ce00e222f92d435da812e90c2b7d6debde6098d951e679a6f297d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41648859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee013407b157c64394f8af722217bd4209315b8f1402ef31722223c103c85e36. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41648860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad8453202656cad7f3d1ac04a2ac0660e97a7c123111868b299f0b44635e468. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41648861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c11cb232fd72a235efccfc7521091972a79af32eac1211768e495d68ed1442a. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41648862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e0ed5d6269eda24bd341b0ca1eb3fdee0e051558d2b9cbc56a65129062f3f9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41648863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425097b4ed9083460c113b474f6d37e610a8b61bebba1810a9b581b7d2b8991c. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41648864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1ba4b4b09b27bfc4db244894d07eae81adc94f586ad38ee6500aaccb31688e. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41648866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b43c7b2842dbf0264fe07712c846ecaf2fdca0392ad4ea586ebc30613df9732. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X41648869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c27cc63a1b48633860e2f95095451b0543c3890b0602a41eb777415b0ecbe30. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQQ11600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0e0342009bca83aa5b23cb174d54b926b5dbac16914bdf858e065e9f491dcb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQQ11600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3a561713563e45dfe7b765c6af325acf4734e8a063c76249a03afd6b875af6. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQQ11600108.
Historias de amor (feat. Der fall böse) - B.T. Español Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183712d7a16cc261e82d0d3544457bf2ddd5e54847cee9f6cc52082e8cf01bf4. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF171010303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f343e021108ecf6a688ff4da880ac5cd9fb2ef2908fb6e619099be682e2d14. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU161001749.